Doorcheck



F K. EASTMAN April 1, 1930.

DOORCHECK Filed Sept. 2, 1927 2 Sheets-Sheet l INVENTOR. f2 0x0fffJST/VA/V F. K EASTMAN April 1, 1930.

DOORCHECK Filed Sept. 2, 1927 2 Sheets-Sheet 2 4 ,llllllnllull INVENTOR.F4 are /r. n-sr/-M/v.

v- AT RNEYS Patented Apr. 1, 1930 UNITED STATES PATENT OFFICE FLOYD K.EASTMAN, 'OF KOKOMO, INDIANA, .ASSIGNOR TO THE CONCEALED DOOR CHECK 00.,OF KOKOMO, INDIANA, A CORPORATION DOORCHEGK Application filed September2, 1927. Serial No. 217,089.

This invention relates to an improvement in door checks of the charactershown and described in my ending applications, Serial No. 104,081, edApril 23, 1926,

Serial No. 120,009, filed July 2, 1926 and Serial No. 138,236, filedSeptember 28, 1926.

The principal object of this invention resides in the provision of awire fabric strap which is so woven as to leave substantial intersticesbetween the strands of wire so as to permit the fabric strap to yieldlongitudinally by drawing the wire strands inwardly toward each othertending to close up such interstices. This permits of a flexible andyielding fabric strap formed of wire strands which greatly increases thetensile strength of the check without impairing its flexibilty andyielding qualities.

Another feature resides in the embedding of rubber in the fabric strapso that the rubber or similar material is yieldingly compressed betweenthe strands of wire upon stretching, while at the same time causing thefabric strap to be attached to and form a substantial part of thevulcanized rubber cover- The full nature of the invention will beunderstood from the accompanying drawings and the following descriptionand claims:

Fig. l is a plan view of the strap with a ortion of one end thereofbroken away.

ig. 2 is the same as Fig. 1 with the rubber removed but indicated bydotted lines. Fig.

3 is a view looking down on the top edge of Fig. 2. Fig. 4 is a sectiontaken on the lines 4.4 of Fig. 1. Fig. 5 is a section taken on the line55 of Fig. 1. Fig. 6 is a plan view of a modified form of strap with therubber covering removed but indicated by the dotted lines. Fig. 7 is aview looking down on the top edge of the strap shown in F i%, 6. Fig. 8is a section taken on line 8-8 of ig. 6. Fig. 9 is a section taken online 99 of Fig. 6.

As shown, Figs. 1 to 5 inclusive, in the drawings,.the door checkcomprises an outer vulcanized rubber strap 10 having a crossheadembedded in one end thereof and an C9 anchor p ate 12 embedded in theother en thereof. Formed within the vulcanized rubber strap, the rubberacting as an outer protection and finishing coat, there is provided aspring steel strip 13 having one end mounted upon the cross-head l1 andfreely movable relative thereto. Embracing the the strip 13 and clampsthe strap 14 on each side thereof. The free ends of the strap 14: arefolded back about the clip 15, as best illustrated in Figs. 2 and 3.

It will be noted from this construction, and particularly with respectto the formation of the wire fabric strap 14, that it is capable ofstretching by reason of the substantial interstices provided in theweaving thereof, the wire threads being drawn laterally upon stretchingthe strap longitudinally. In applying the vulcanized rubber coating asindicated by numeral 10 in Fig. 1, the rubber will penetrate into theinterstices so that the strap 14 will be secured thereto, but withoutmaterially affecting the stretching quali ties of the strap since therubber embedded therein will be capable of compression,

The anchor plate 12 is provided with a plurality of sharp projectingteeth, as best shown in Fig. 5, and is so positioned on the strap as tocause the teeth to engage in the wire mesh of the fabric strap '14 andabout the clip 15 which is held by the fold,in the free ends of saidstrap. Theplate 13 asv shown 7 herein is embedded in the vulcanizedrubber 10 so as to be held firmly'in place. By means of the screw holesprovided in said plate, a

suitable anchor for the strap is provided which can not pull out or rip,owing to its being held in place by the rubber coating, and by reason ofthe teeth engaging in the wire mesh and abutting the clip 15.

In Figs. 6 to 9, inclusive, there is illustrated a modified andsimplified form of the invention. The woven wire fabric strip 114 isembedded and partially covered with rubber and one end is turnedangularly as at 114. A to receive the U-shaped clip at the end thereof.The opposite end of the wire fabric is turned as at 114B forming a loopwhich passes thru a slip Ill-A in the plate 111. A suitable wrapping ofvulcanizable material serves as a spacer between the adjacent portions11 1 and 114-B and is indicated by the numeral 113. The completed strapis formed as shown'in Fig. 1 but using the modification shown in Fig. 6in place of the modification shown in Fig. 2. This last mentioned typeof construction discloses a cheaper'type of cross bar, requiring the useof less woven wire and eliminating the flexible spring or strip. Thispermits greater flexibility, and by reason of the use for which thisdevice is intended, the construction is such that it has ample strengthto perform its work.

From the above, it will be observed'that without sacrificing thestretching and resilient qualities of the strap, a substantial increasein tensile strength and anchoring facilities isobtained over theprior'use of cloth fabric.

The invention claimed is:

1. A check strap for limiting the opening movement of a door comprisinga wirefabric strap formed of a plurality of diagonally disposed wiresarranged to permitlongitudinal resiliency thereof, a cross head securedat one end thereof, an anchor plate engaging the other end thereof, anda rubber covering therefor adapted to protect said strap whilepermitting of its longitudinal resiliency.

2. A check strap for limiting the opening movement of a door comprisinga wire fabric strap formed of a plurality of diagonally disposed wiresarranged to permit of longitudinal resiliency thereof, a crosshead aboutwhich said strap isadapted to be looped an anchor plate engaging theopposite end of said strap, and a rubber covering therefor imbedded inthe interstices of said strap for protecting the same withoutsubstantial interference with its longitudinal resiliency.

3. A check strap for limiting the opening movement of a door comprisinga'wire fabric strap formed of a plurality of diagonally dis osed wiresarranged to permit of longitu inal resiliency thereof, arubberprotective covering for said strap adapted to'be imbedtied in theinterstices thereof without substantial interference with itslongitudinal resiliency, a crosshead secured to one end of said check,and an anchor plate secured to the other end thereof, whereby thelongitudinal resiliency of said check will absorb a shock upon theopening of the door being checked thereby.

In witness whereof,I havefhereuuto'aflixed mysig'nature. p i

"FLOYD K. EASTMAN.

